Connection Diagram

Top View

(looking from the coating side)

micro SMD 9 Bump Package

BPA09

20011701

Pin Descriptions

Bump No.

Name

Function

A1

MR

Manual-Reset input. When MR is less than V

RESET/RESET is engaged.

B1

V

CC

Power Supply input.

C1

RESET

Reset Logic Output. Pulses low for t

low whenever V

for t

V

RESET

Reset Logic Output. RESET is the inverse of RESET (LM3709 only).

C3

LLO

Low-Line Logic Output. Early Power-Fail warning output. Low when V

(Low-Line Output Threshold). This output can be used to generate an NMI (Non-Maskable

Interrupt) to provide an early warning of imminent power-failure.

B3

GND

Ground reference for all signals.

A3

WDI

Watchdog Input Transition Monitor: If no transition activity occurs for a period exceeding

t

A2, C2

NC

No Connect.

B2

NC

No Connect. Test input used at factory only. Leave floating.

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